code: def UnpackTag(tag):
      """The inverse of PackTag().  Given an unsigned 32-bit number,
      returns a (field_number, wire_type) tuple.
      """
      return (tag >> TAG_TYPE_BITS), (tag & TAG_TYPE_MASK)
  
imports: import struct
  from google.protobuf import descriptor
  from google.protobuf import message
label_desc: Use image node_id 2 for calling a global function with example usage: UnpackTag(tag) and returns: unknown,  unknown